The Bada Mahadev Cave is located almost 10 km away from Pachmarhi. It is a Shrine of Lord Mahadeva or Shiva. It is a 60 ft long cave. It has shrines of Lord Brahma, Lord Vishnu and also of Lord Ganesha inside it.
As per local beliefs, the Bada Mahadev Cave is the place where Lord Vishnu killed Demon Bhasmasura taking the form of Mohini, a celestial beauty. It has water dropping from the cave continuously and it gets collected in a pool. Taking bath in this pool is supposed to cure one of all evils. It is a beautiful place to explore nature and also for worship.